xref: /trunk/main/drawinglayer/inc/drawinglayer/processor3d/geometry2dextractor.hxx (revision 4f506f19)

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#ifndef INCLUDED_DRAWINGLAYER_PROCESSOR3D_GEOMETRY2DEXTRACTOR_HXX
#define INCLUDED_DRAWINGLAYER_PROCESSOR3D_GEOMETRY2DEXTRACTOR_HXX

#include <drawinglayer/drawinglayerdllapi.h>
#include <drawinglayer/processor3d/baseprocessor3d.hxx>
#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/matrix/b3dhommatrix.hxx>
#include <basegfx/color/bcolormodifier.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace drawinglayer
{
	namespace processor3d
	{
        /** Geometry2DExtractingProcessor class

            This processor extracts the 2D geometry (projected geometry) of all feeded primitives.
            It is e.g. used as sub-processor for contour extraction where 3D geometry is only
            useful as 2D projected geometry.
         */
		class DRAWINGLAYER_DLLPUBLIC Geometry2DExtractingProcessor : public BaseProcessor3D
		{
		private:
			/// result holding vector (2D)
			primitive2d::Primitive2DSequence				maPrimitive2DSequence;

			/// object transformation for scene for 2d definition
			basegfx::B2DHomMatrix							maObjectTransformation;

			/// the modifiedColorPrimitive stack
			basegfx::BColorModifierStack					maBColorModifierStack;

			/*  as tooling, the process() implementation takes over API handling and calls this
			    virtual render method when the primitive implementation is BasePrimitive3D-based.
             */
			virtual void processBasePrimitive3D(const primitive3d::BasePrimitive3D& rCandidate);

		public:
			Geometry2DExtractingProcessor(
				const geometry::ViewInformation3D& rViewInformation,
				const basegfx::B2DHomMatrix& rObjectTransformation);

			// data read access
			const primitive2d::Primitive2DSequence& getPrimitive2DSequence() const { return maPrimitive2DSequence; }
			const basegfx::B2DHomMatrix& getObjectTransformation() const { return maObjectTransformation; }
			const basegfx::BColorModifierStack& getBColorModifierStack() const { return maBColorModifierStack; }
		};
	} // end of namespace processor3d
} // end of namespace drawinglayer

#endif //INCLUDED_DRAWINGLAYER_PROCESSOR3D_GEOMETRY2DEXTRACTOR_HXX

// eof